Arm attachment for indicators



Aflg. 26, 1930; c RUF 1,774,157

ARM ATTACHIENT FOR INDICATORS Filed Jan. 2'7, 1930 INVENTOR. ChrlsTnem. Eugene. Raf.

ATTORNEY.

Aug. 2a 1930 orrnrs-rmn EUGENE nor, on ronerrnnnrsrn,

NEW YORK, Assmnon [T STANDARD GAGE COMPANY, INC, OF 1 0?!GHIZEEI?SIZE, NEW YORK, A CORPORATION OF NEW YORK Ania ATTACHMENT non. INDICATORS Application. filed January 27, 1930. Serial No. 423,696

The present invention relates to a dial in dicatorgauge of that class which is employed in the checking of measurements, and relates more particularly to that style of dial indicator designed to be mounted or held in some suitable mannerto a standard or fixture, and brought into contact with the article to be measured or, checked.

While the device is somewhat in the formof an attachment, it may be incorporated into the original design of the dial indicator, and will in no way interifere with the usual method of using the same.

In dial indicators ofthis kind the indi-- eating hand is operated by a contact plunger through a train of gears; the end of the plunger being brought into contact witl the object to be gauged, while in the device herewith shown and described there is i added thereto a side leveror arm, designed to be depressed by the operator for the purpose of slightly raising'the plunger during. the

time of locating the gauge and before contact is made with the article to be gauged; thus when the indicator is mounted to. a fixture as employed in production work, a more accurate reading can be had 'by raising the plunger clear of the article before making the contact.

The object of the nventionis to provide an arm or lever attachment for dial indicator gauges, whereby the indicating or recording mechanism may be operated by the depressing of said arm; I

Another object of theinvention is to provide a simple, durable and efficient device for this purpose, which shall consist of few parts, and those readily adaptable to the usual design of dialindicator gauge.

Still another object is to provide a ganging means whereby due to the length or leverage of the work contact member, the indicator is very sensitive, and'produces a very accurate gauge.

A further object is to provide a finger operated lever whereby the contact plunger may be raised without having to push inward on the end of the plunger.

\Vith these and other objects in view, my 50 invention consists in certain construction and combination of parts as will hereinafter be fully described and claimed and illustrated in the accompanying drawings which form a part hereof and in which like figures of reference refer to corresponding parts in all of the views, andit is to be understood that slight changes may be made without departmgfrom the spirit ofthe invention.

In the drawings 7 Figure 1 is a front view of an indicatorgauge of the dial type, and, shows the side operating lever .attached thereto.

Figure 2 is a rear view of'ithe same.

Figure 3 is a similar rear view, but with the back plate, dial lock and'cap removed. Y Figure 4 1s a new of the inner side of the back plate, showing the operating lever attached thereto.

Figure 5 is an edge view of 1 the same, 'partly 1n section.

' Referring to the drawings A well 'known'type of dial indicator is indicated by the numeral 10, .and is provided with the body portion 11 to which is secured by the screws 12 and the dowl pins 18 the back plate 14 which is formed with a mounting lug 15, by which the gauge may be attached to astand or other object.

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The indicating hand 16 is operated in the usual manner through a train of gears from the pinion l7 which is rotated by the rack 18 on the plunger 19 as actuated by the contact end 20 when broughtinto contact with the article to be measured.

The plunger 19 held fromby an arm 21 secured thereto and sliding rotation within a guide 22 attached to the casing 23;

a spring 2 being attached to said arm 21 and the case or body portion 11 to retain the plungerin a zero position.

At a suitable location, the back plate 14 is formed with a bearing 25 within which is rotatably mounted a stud 26, which is formed with a head 27 adjacent the inner face of said back plate 14, and to this head 27 at right angles to the axis thereof is secured an arm 28 which is formed with a hooked end 29, and-adapted to engage the lower side of the arm 21 adjacent to its j uncture with the plunger 19, and adapted to raise said plunger 19 by the moven'ient of the arm 21 upward.

On the outer end of said stud 26 and adjacent to the outer face of the back plate lt is placed a collar 30, and through this collar 30 and also the end of the stud 14: is secured the inner end of the finger lever 31 which extends outward and upward from the side of the gauge and which is slightly bent as at 32.

It Will thus be seen that, the dial indicator having been attached by the lug 15 to some suitable stand or fixture 32, by a screw 33, the operator by depressing the end 32 of the linger lever will be the action of said lever through the stud 27 and arm 28 coacting with the arm 21 raise the plunger 1%) slightly before the same is brought into contact with the Work to be gauged.

' It is also understood that a number of dial indicators may be mounted upon a fixture or other support and all. operated through a single finger lever by suitable arms attached to the studs and connected by a rod together; also if desired the finger lever may be made detachable from the stud.

Having thus described my invention, what I claim new and desire to secure by Letters Patent, is

1. In combination with a dial indicator of the class described, including a back, of a finger operated lever pivoted to said back and projecting from the side of said indica- V tor, and means actuated by said finger lever for operating the indicating mechanism of said indicator.

2. A lever operating means for dial gauges, comprising in combination with a dial gauge including indicating mechanism and abackplate, of a finger lever pivoted to said back plate, and means actuated by said lever and coacting with the indicating mechanism to operate the same.

3. In a dial indicator of the class described ineluding indicating mechanism, a

contact plunger and a b ck plate, of a linger lever for receding said plunger, comprising a stud pivoted in said back plate, a finger lover secured thereto adjacent the outer face of said back plate and projecting therefrom, an arm secured to said stud adjacent the inner face of said back plate, a hooked end formed thereon and adansed to engage with and raise said plunger.

In testimony whereof I alhx my signature.

CHRISTIAN EUGENE E F. 

